how to keep the slider's value in the UI remain changed after leaving a scene ?

i am in a desperate need of your help how do i write this?? so i have a multi scene game and if I changed the music volume value (audiomixer) via Slider in scene 1 it works, but if go to scene 2 and return to scene 1 i found the slider’s value return to default !!! i need the slider’s value in the UI remain changed with the AudioMixer.

thanks for replying but i get 404 error once i clicked on the link

Wierd, the link is to a public post on this forum and works fine for me. But no worries. Will just move the thread to the correct forum.